20 µL Non-Filtered Tips & Refills Compatible with Opentrons OT-2

20 µL Non-Filtered Pipette Tips and Refills for Opentrons OT-2

Puretest 20 µL non-filtered tips are intended for low-volume Opentrons OT-2 workflows where an aerosol barrier is not required. The family supports complete 96-position racks and refill-style packaging, allowing laboratories to balance ready-to-load convenience with reduced packaging consumption.

The clear polypropylene tip is designed around the OT-2 P20 interface. Controlled upper-cone geometry, rack flatness and uniform tip height support repeatable pickup by both single-channel and 8-channel pipettes, while a smooth internal fluid path helps minimize visible residual liquid.

Important: These are independent compatible consumables. Validate the exact rack or refill, labware definition, pipette, protocol and liquid class before routine use.

Product Highlights

• Low-volume format: 20 µL nominal capacity for approximately 1–20 µL transfers.
• Non-filtered fluid path: suitable for routine reagent transfers that do not require aerosol protection.
• Rack and refill choices: complete racks for convenience or refills to reduce rigid plastic packaging.
• Clear polypropylene: non-conductive tips with visual confirmation of liquid movement.
• 96-position format: supports single-channel and multichannel OT-2 workflows after qualification.
• Second-source support: evaluation samples and technical documentation for procurement qualification.

Tip Structure and Functional Design

The non-filtered design provides an unobstructed internal air path, which can be advantageous for routine low-volume transfers when aerosol control is not required by the method. Cone sealing and distal orifice uniformity remain critical because any leakage or dimensional variation can disproportionately affect microliter-scale aspiration and dispense.

Refill inserts must be seated completely and uniformly in the qualified base. During evaluation, confirm rack registration, pickup height and tip ejection with both full and partially depleted racks. Never assume that a refill insert can be used in an unrelated base only because the outer footprint appears similar.

Technical Specifications and Selection Notes

Platform, Pipette and Rack Compatibility

Filtered, Non-Filtered and Packaging Configurations

Choose complete racks when the fastest deployment and an enclosed rack system are priorities. Choose refill inserts when the laboratory has qualified reusable bases and wants to reduce packaging volume. Confirm whether sterile, non-sterile or purity-certified supply is required before ordering.

Quality and Configuration Control

• Controlled molding and dimensional inspection support repeatable nozzle sealing, pickup height and ejection behavior across the 96-position rack.
• Transparent polypropylene provides direct visual confirmation of liquid movement and residual droplets; filtered versions include a hydrophobic barrier selected for the intended format.
• Available sterile and purity-controlled configurations must be confirmed against the quotation, current specification and lot documentation.
• Lot identification, packaging integrity, dimensional drawings, material declarations and available quality documents can be supplied for the confirmed ordering configuration.
• Sterility, purity, filter, packaging and shelf-life claims apply only when they are listed on the current quotation, specification sheet and lot documentation.

Application Guide

• Routine low-volume reagent transfer
• Plate setup and assay miniaturization
• Sample normalization
• Dye, buffer and enzyme dispensing
• Research automation where aerosol protection is not required

Recommended Qualification Workflow

1. Confirm the platform: identify the exact robot, pipette model, channel count and installed software or protocol definition.
2. Select the smallest suitable capacity: choose a tip whose qualified working range covers the intended transfer volume.
3. Confirm the configuration: filtered or non-filtered, rack or refill, sterile or non-sterile, and required purity documentation.
4. Run mechanical checks: evaluate full-rack pickup, nozzle sealing, tip height, labware clearance and clean ejection.
5. Run liquid-handling checks: confirm aspiration, dispense, residual volume, accuracy, precision and contamination control with representative liquids and labware.
6. Lock the approved item: record the final item code, tip configuration, rack definition and validated protocol settings before routine procurement.

Ordering Information

To receive the correct quotation, specify: OT-2 model, P20 pipette and channel count, complete rack or refill, required base information, sterile/purity requirements, carton quantity and annual demand. Puretest supports evaluation samples, distributor supply, recurring bulk orders and OEM/private-label programs for confirmed configurations.

Frequently Asked Questions

What is the difference between a rack and a refill?

A rack is supplied with the complete rack assembly. A refill is a tip-bearing insert intended for a confirmed compatible reusable base.

When should I choose non-filtered tips?

Choose non-filtered tips for validated workflows that do not require an aerosol barrier and where packaging efficiency or open fluid-path performance is preferred.

Can the refill fit any 96-tip base?

No. Confirm the exact base and insert combination; outer footprint alone does not establish mechanical compatibility.

Are these tips compatible with Flex?

No. OT-2 and Flex tips use different platform interfaces.

Can Puretest provide evaluation samples?

Yes. Include the exact robot, pipette, rack-base and protocol details with your request.

Request Samples, Documents or a Quotation

Send your robot model, pipette model, channel count, target volume, filtered/non-filtered preference, rack/refill preference, sterility requirement and estimated annual demand. We will match the most appropriate configuration and provide available qualification documents.

Contact Puretest for an evaluation sample or quotation

Opentrons and the related product names are trademarks of their respective owner. Puretest is an independent compatible-consumables supplier and is not affiliated with or endorsed by Opentrons Labworks, Inc.